DreamStalker wrote:Of course there is a complicated cascade of issues ... but it all starts with a lack of oxygen. Provide the oxygen and cascade of issues associated with apnea are resolved.
apnea /ap·ne·a/ (ˈapnēə)
Temporary cessation of breathing or respiration, esp. during sleep.
respiration /res·pi·ra·tion/ (res″pĭ-ra´shun)
1. the exchange of oxygen and carbon dioxide between the atmosphere and the body cells, including ventilation (inhalation and exhalation); diffusion of oxygen from alveoli to blood and of carbon dioxide from blood to alveoli; and transport of oxygen to and carbon dioxide from body cells.
2. ventilation (1).
3. cellular respiration; the exergonic metabolic processes in living cells by which molecular oxygen is taken in, organic substances are oxidized, free energy is released, and carbon dioxide, water, and other oxidized products are given off by the cell.
Talk to us about what happens in the human body if there is too little carbon dioxide. How does that affect circulation? How does that affect metabolism?
Average composition of the air we breathe:
Nitrogen -- N2 -- 78.084%
Oxygen -- O2 -- 20.9476%
Argon -- Ar -- 0.934%
Carbon Dioxide -- CO2 -- 0.0314%
Neon -- Ne -- 0.001818%
Methane -- CH4 -- 0.0002%
Helium -- He -- 0.000524%
As you can see, CO2 pales in comparison to O2. Our bodies produce CO2 as a by-product of respiration in concentrations greater than average air composition. When we have an apnea, it is the lack of O2 that is critical ... not a lack of CO2. In other words, hypocapnia (the lack of CO2) is not caused by apnea ... quite the contrary, CO2 builds up in the blood stream (hypercapnia) when we go into apnea ... hence the symptoms being headache, confusion, lethargy, progressing to convulsions, unconsciousness, and even death.